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Lumo vs Jan: catalog facts
Lumo	Jan
Freemium Plans are not listed in the research; check Proton's site for current pricing.	Free Free and open source. Using a third-party cloud model through Jan costs whatever that…
Android, Web	Windows, macOS, Linux
Zero-access encrypted chat history Provider states it does not track or record conversations	Runs fully offline on your own computer when you want it to Same interface for local models and for OpenAI, Anthropic, Google, Mistral and others
Little public detail on models and limits in the research Requires trusting Proton's privacy claims	Still pre-1.0 and moving fast; features appear and change between releases Adding a cloud provider means putting that provider’s API key into the app
Web application	Downloadable app
Closed source	Open source
License not stated	License: Apache-2.0
Not stated if an account is needed	No account needed
Needs internet	Works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 20, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.